Thaum tiv thaiv cov ntaub ntawv thiab cov khoom los ntawm cov teeb meem ntawm lub hnub ci, muaj ob qho khoom siv ntxiv: UV absorbers thiablub teeb stabilizers. Txawm hais tias lawv suab zoo sib xws, ob yam tshuaj muaj qhov sib txawv ntawm qhov lawv ua haujlwm thiab qib kev tiv thaiv lawv muab.

Raws li lub npe implies, UV absorbers nqus ultraviolet (UV) hluav taws xob los ntawm tshav ntuj. UV hluav taws xob paub tias ua rau degradation ntawm ntau cov ntaub ntawv, tshwj xeeb tshaj yog cov uas raug tshav ntuj rau ncua sij hawm. UV absorbers ua hauj lwm los ntawm absorbing UV hluav taws xob thiab hloov mus rau hauv tshav kub, uas yog ces dissipated harmlessly.

Photostabilizers, ntawm qhov tod tes, ua haujlwm los ntawm inhibiting cov khoom degradation los ntawm ultraviolet hluav taws xob thiab pom lub teeb. UV absorbers tsuas yog tsom rau kev tiv thaiv los ntawm UV hluav taws xob, thaum photostabilizers muab kev tiv thaiv dav. Tsis tsuas yog lawv nqus UV hluav taws xob xwb, lawv tseem cuab cov dawb radicals uas tsim los ntawm kev pom lub teeb pom kev.

Lub luag haujlwm ntawmlub teeb stabilizersyog kom neutralize dawb radicals thiab tiv thaiv lawv los ntawm kev puas tsuaj rau cov ntaub ntawv. Qhov no ua rau lawv muaj txiaj ntsig tshwj xeeb ntawm kev ua kom qeeb ntawm cov txheej txheem degradation ntawm cov ntaub ntawv uas feem ntau raug rau qhov chaw sab nraum zoov. Los ntawm kev tiv thaiv kev tsim ntawm cov dawb radicals, lub teeb stabilizers pab txuas lub neej ntawm cov khoom thiab tswj nws cov qauv kev ncaj ncees.

Tsis tas li ntawd, lub teeb stabilizers feem ntau ua ke nrogUV absorberslos muab kev tiv thaiv tag nrho los ntawm kev puas tsuaj ntawm lub hnub. Thaum UV absorbers feem ntau hais txog qhov cuam tshuam ntawm UV hluav taws xob, cov duab hluav taws xob ntxiv ib txheej ntxiv ntawm kev tiv thaiv los ntawm kev tshem tawm cov dawb radicals tsim los ntawm lub teeb pom kev. Los ntawm kev siv ob qho khoom ntxiv ua ke, cov khoom siv tau raug tiv thaiv los ntawm ntau qhov teeb meem wavelengths.

Lwm qhov sib txawv ntawm UV absorbers thiablub teeb stabilizersyog lawv daim ntawv thov thiab compatibility nrog cov ntaub ntawv sib txawv. UV absorbers feem ntau yog siv rau hauv cov xim ntshiab, cov yeeb yaj kiab thiab cov polymers vim tias lawv tau tsim los ua pob tshab thiab tsis cuam tshuam rau cov khoom siv. Lub teeb stabilizers, ntawm qhov tod tes, muaj ntau yam thiab siv tau rau ntau yam kev siv, xws li yas, roj hmab, xim, thiab textiles.

Hauv kev xaus, txawm hais tias ob qho tib si UV absorbers thiab photostabilizers yog siv los tiv thaiv cov ntaub ntawv los ntawm tshav ntuj-induced degradation, lawv txawv ntawm lawv cov txheej txheem ntawm kev ua thiab qib ntawm kev tiv thaiv. UV absorbers nqus UV hluav taws xob, thaum photostabilizers inhibit degradation los ntawm UV hluav taws xob thiab pom lub teeb los ntawm neutralizing dawb radicals. Los ntawm kev nkag siab txog qhov sib txawv ntawm cov khoom siv ntxiv no, cov tuam ntxhab tuaj yeem xaiv qhov kev xaiv tsim nyog tshaj plaws rau lawv daim ntawv thov tshwj xeeb thiab ua kom muaj kev tiv thaiv zoo tshaj plaws rau lawv cov ntaub ntawv.